baber/WOPTO huggingface dataset:
Patent DE-3924350-A1 (DE)
Title: Switching system for UV-light water steriliser - water flow and UV-light source are controlled so that water is always properly sterilised and no waiting period is required
Inventor: SWOBODA WALTER
IPC: C02F1/32
Filed: 1989-07-22
Abstract: A pressure switch is fitted in the water inlet pipe downstream of an inlet valve and upstream of a solenoid valve. This solenoid valve is operated by a switching device connected to the  pressure switch. The switching device keeps the sterilising UV-light source in operation for a short period after the flow of water has stopped and the solenoid valve has been closed. The switching device may be arranged to keep the  solenoid valve closed for an adjustable time period after the power is switched on, and may be provided with a facility for switching on and off the UV-light periodically during times when the inlet valve is closed. A photocell may be used to supervise the UV-light source and to close the solenoid valve if the light intensity falls below a required minimum value. USE/ADVANTAGE - This device is used for sterilising drinking water at the point of consumption using a UV-light steriliser.  A control system for the steriliser is proposed which provides a reliable supply of sterilised water and allows sterilised water to be drawn without any waiting period.
Patent DE-3925020-A1 (DE)
Inventor: SCHWEISS PETER
IPC: B01D29/25
Filed: 1989-07-28
Abstract: The rotor of a sorter has a circumference which, in cross section perpendicular to the rotor axis of rotation, is essentially composed of circular arcs. Depending on sorter size, the number of circular arcs amounts to between two and eight. The eccentricity of the circular arcs relative to their center, based on the rotor axis of rotation, amounts to preferably between 4 and 10 mm. This makes it possible to obtain slight rotor stresses at a good sorting efficacy, preferably also with a mean substance density of more than 3% of fiber suspensions. The difference between the smallest and greatest rotor spacing e=fmax-fmin amounts to maximally 60 mm, preferably 20 mm.
Patent DE-3925631-A1 (DE)
Title: Filling pet food containers - involves screen covering food outlet base until empty container appears underneath
Inventor: MUELLER EDWIN
IPC: B65B55/24
Filed: 1989-08-03
Abstract: When filling containers with meat-containing petfood, the product is pressed from a dosing machine through an outlet opening into the open container underneath which when filled drops down into a waiting position before being moved away horizontally. After the lowering process and before the container, is moved away a screen (14, 15) is moved into the area between the outlet opening (7) and the container (10) thereby covering the outlet opening at the bottom. The screen is locked in this position until the next empty container (10) occupies the position of the filled container. The screen moves across the filling stream (1) guided by a drive and control unit. USE/ADVANTAGE - The welding zone of the container edge is safeguarded against drops of fluid or fibres during its conveyance.
Patent DE-3927794-A1 (DE)
Inventor: WEBER EKKEHARD PROF DR ING
IPC: B01D53/34
Filed: 1989-08-23
Abstract: A process for removing the acidic compounds HF, HCl, SO2, SO3 and/or H2S from gases arising in the combustion or gasification of fossil fuels is described. In this process, the hot gases are contacted with a melt of oxides, hydroxides and/or carbonates of Li, Na, K, Mg and/or Ca at a temperature from 500 to 1000 DEG C.
Patent DE-3929768-A1 (DE)
Title: Fastener for TV or radio receiver rear panel - has clamping ribs at one or both sides of compressible spring
Inventor: DITTENHOEFER FRANZ-JOSEF
IPC: H05K5/00
Filed: 1989-09-06
Abstract: The TV receiver fastener on a cabinet consists of a spring member on a cabinet inner wall, or receiver rear wall, engaging behind a securing lug or recess. The receiver wall, or the housing inner wall, has apertures via which the spring member can be compressed by a holder. Clamping ribs (7a, 7b) are fitted in the compressible spring member (3) swivel range on one or both sides and extend obliquely to the spring member longitudinal axis. In the rest position, the spring member engages a triangular free space between one clamping rib and the respective side face. The incline, height and the spring force are appropriately rated. ADVANTAGE - Reliable fastening and secure free state with spring member released.
Patent DE-3931707-A1 (DE)
Title: LC medium contg. fluoro or di:fluoro phenylene cpd. - to induce smectic C-phase in component with only smectic A- and/or B-phase, useful in display
Inventor: REIFFENRATH VOLKER
IPC: C09K19/46
Filed: 1989-09-22
Abstract: Liquid crystal (LC) medium with a smectic C phase contains at least 2 LC components A and B. Component A consists of cpd(s).  with only one smectic A and/or smectic B phase but no smectic C phase. The novelty is that component B consists of cpd(s). with a 2-fluoro- or 2,3-difluoro -1,4-phenylene gp. to produce the smectic C phase. USE/ADVANTAGE - The medium has a spontaneous polarisation Ps  greater than 1 nC/cm2 (claimed). It is claimed for use as dielectric in electrooptical systems, esp. for displays. It satisfies the requirements for an SC asterisk phase existing in a wide temp. range around ambient temp., which is formed from chemically stable and pure cpds., and optimised LC material parameters, e.g. spontaneous polarisation, optical anisotropy, flow viscosity, dielectric anisotropy, tilt angle and pitch.
Patent DE-3933159-A1 (DE)
Title: Introductory endoscopic section - with optical fibre bunches for image with lens and for light
Inventor: KAWASHIMA MASAHIRO
IPC: G02B23/26
Filed: 1989-10-04
Abstract: Endoscope has a part (10) which is inserted in a body cavity and comprises an outer tube (11), optical fibres (13) with a lens (12) for the image, and optical fibres (14) for the light. An adhesive blob (16) fixes the lens and a jointing agent (17) links the distal ends of the fibres (14). The tube (11) is made of a material which is permeable for X-rays, e.g., PVC, PU or PTFE.  The adhesive (16) or the agent (17) contains a material which is impermeable to X-rays, e.g., barium sulphate or bismuth oxide. ADVANTAGE - Requires only a reduced dia. for the introductory section and its location is easily determined by X-rays.
Patent DE-3938088-A1 (DE)
Title: Mounting head for SMD electronic components - has tool on rotary shaft driven by brushless DC motor with eccentric rotor
Inventor: WEIBLEN KURT
IPC: H05K13/04
Filed: 1989-11-16
Abstract: The head is intended for mounting components on the surface of a support and has rotary angle position adjuster and a tool for lifting and lowering the components. The tool (3) is fitted on a rotary shaft, driven by a brushless d.c. motor (9). The latter rotor (7) on the shaft is axially offset from the magnetic centre (23) of the motor stator (8). A magnetic coil (11) surrounds the shaft and a magnetic core on the shaft, spaced from a magnetic stop (22). The coil exerts a force on the magnetic core opposite to that of the permanent magnetic rotor. The angular position of the shaft is measured by an electric rotation detector (19), transmitting a signal to a control (20). ADVANTAGE - Defined axial force, acting on component provided by d.c. motor and electromagnet.
Patent DE-3938251-A1 (DE)
Title: Mains independent electrical lighting system - has solar energy charged batteries with sensors to control lighting activation
Inventor: STUERZL WILHELM
IPC: H05B37/02
Filed: 1989-11-17
Abstract: The mains independent electrical lighting system (10) has a solar panel (12) that is coupled to a rechargeable battery (14), a switching system (16) and a light source (18). The switching system receives a control input from an AND gate (28) that has inputs from a pair of sensors (20, 22). One of the sensors (20) responds to the ambient lighting conductor and the other is an infra red detector that responds to either body heat or to the presence of a source, such as the heat from a car engine. When both sensors generate an output the lighting circuit is activated for a set period. ADVANTAGE - Provides limited energy consumption.
Patent DE-4000562-A1 (DE)
Title: Housing with adjusting ring for mounting electrical unit - is embedded in concrete to form wall or partition with ring having thread inserts for screws to fix unit e.g. switch
Inventor: PARLATORE ROGER
IPC: H02G3/18
Filed: 1990-01-10
Abstract: The ring (14) for fixing the electrical unit has at least one local support region for fixing the unit using a claw fixing and the support region (17) is designed accordingly. The support region (17), axially arranged, includes a number of bevels of different diameters. The adjacent bevels (20) nearest to the outlet mouth (26) of the housing (10) have the smallest dia. and those at the furthest distance have the largest dia. The support region (17) belongs to a sector (18)  which, fixed to the ring (14), extends projecting free in the direction of the base (19) of the housing, from the ring (14) essentially parallel to the axis of this housing. The sector (18) consists with the ring (14) of one piece and has a coarse or ripped surface extending on the inner surface of the housing and on rear side (23). ADVANTAGE - No precautions required when mounting housing and positioning angle about axis and this has no  influence on vertical alignment of unit to be laid. Suitable for universal use, i.e. for various appts.
Patent DE-4001606-A1 (DE)
Title: Vulcanisable rubber mixts. with improved bonding to reinforcement
Inventor: HESSE WOLFGANG DR
IPC: C08G16/02
Filed: 1990-01-20
Abstract: Vulcanisable rubber mixts. (I), with improved adhesion to steel cord- or textile fibre-based reinforcements, are claimed, together with the vulcanisation of such mixts.; (I) contain vulcanisable rubber, adhesion promoters (II), vulcanising agents, hardening agents, fillers and the usual additives; the novelty is that (II) is a modified novolak which is obtd. by simultaneous reaction of a polyhydric phenol with an aldehyde and an unsatd. hydrocarbon (III) at elevated temp. in the presence of an acid catalyst, and which contains no residual free phenol. (II) is produced from resorcinol, 1-10C aldehyde (pref. formaldehyde or a source thereof) and (III) (pref. a vinylaromatic cpd.), with mol. ratio resorcinol:(III):aldehyde = (1:0.1:0.3)-(1:1.5:0.95), pref. (1:0.4:0.5)-(1:1.1:0.8); (I) contain up to 20 wt.% (II).
Patent DE-4006256-A1 (DE)
Title: Wind turbine for electricity generation - has vertical rotor used for direct drive of ring generator
Inventor: HERTER ERICH
IPC: F03D9/00
Filed: 1990-02-28
Abstract: The wind turbine for electricity generation has a vertical rotor (2) supported by a tubular mast (7), with stabilisation at the centre via a gyro (3). The  rotor (2) is used for direct drive of a number of ring generators (8) with a stator supported by a base, supported resiliently by the reinforced steel foundation (11), The rotor of the ring generator (8) is supported by a roller bearing. Pref. a series of ring generators (8) are switched in circuit to match the different wind velocities. ADVANTAGE- High power output compared to cost.
Patent DE-4006727-A1 (DE)
Title: Multipole electric coupler between connected strip and plug - has protrusion on clamping screw strip and resting in plug recess
Inventor: ARMBRUSTER GEORG
IPC: H01R13/64
Filed: 1990-03-03
Abstract: The plug assembly can be inserted into the connecting strip in a certain position only, due to its shape. The connecting strip is of a clamping screw type and has an associated protrusion, engaging a recess in the plug assembly, when connected. Alternately, the plug assembly retaining connecting strip is fitted with a recess engaged by a plug assembly protrusion, when connected. USE/ADVANTAGE - Multi-pole plug connectors, e.g. for fuel burning heaters with electric terminals. Safeguarding correct plugging.
Patent DE-4007480-A1 (DE)
Inventor: HISANAGA TETSUO
IPC: G01P5/12
Filed: 1990-03-09
Abstract: A temperature compensating circuit having a third temperature sensor element (RR) for detecting an ambient temperature disposed on the same substrate (10) on which first and second temperature sensor elements (Rx, Ry) are located, and a voltage across the third sensor element, generated by supplying a current thereto, is applied to the first and second sensor elements. Therefore, a voltage applied to first and second sensor elements is automatically changed corresponding to change in ambient temperature, and accordingly a difference in temperature between first and second sensor elements can be precisely detected in a form of voltage signal.
Patent DE-4016839-A1 (DE)
Title: Ball bearing with zero plug - has outer rod formed by two conical rings pressed against balls by garter spring
Inventor: STARK JOHANN DIPL ING
IPC: F16C25/08
Filed: 1990-05-25
Abstract: The ball bearing has zero play between the balls and the recess.  The balls (3) are held in a cage (4) and run in a groove in the inner race (1). The outer race is formed by two rings (7) of conical form.  Each ring (7) has a number of equally spaced lugs projecting radially outwards from its periphery.  These lugs (8) are spaced with the distance between adjacent lugs being greater than the width of the lug.  The rings (7) are so arranged that the lugs (8) of one ring fit between the spaces (9) of the other ring.  The assembled rings have an X-shaped cross-section and are pressed against the balls (3) by a garter spring (10). USE - Ball bearings with zero play.
Patent DE-4017965-A1 (DE)
Title: Collapsible steering column for vehicle - has key made from metal strip which prevents rotation between two parts of column
Inventor: SANDER BERNWARD
IPC: F16B7/10
Filed: 1990-06-05
Abstract: The collapsible steering column for a motor vehicle consists of a first tube (1) which fits inside a second tube (2).  The inner tube (1) has a groove formed in its outer surface.  This groove is aligned with a similar groove (7) formed in the inner surface of the outer tube (2). Relative rotation between the tubes is prevented by a key (6) which engages both grooves. The key is formed from a strip of metal with joggles formed along its length. One end (9) of the key (6) is bent inwards to engage a hole in the wall of the inner tube (1). The other end (10) of the key is bent outwards to engage a slot (12) in the end of the wall of the outer tube (2). USE - Collapsible steering column for vehicle.
Patent DE-4019018-A1 (DE)
Title: Metering powders which are prone to cake - by machine with revolving roller whose circumference has sinusoidal groove filled at top and emptied underneath by scraper blade
Inventor: DOLL GUENTER
IPC: B65G65/48
Filed: 1990-06-14
Abstract: A metering device for measuring out powders, and particularly for use in plastics procsesing equipment, has a metering roller, which is motor driven, about a horizontal axis in a space in a block where it is fed at the open top and discharges from an open bottom side; this roller has at least one radially open feed opening on its circumference and has a scraper blade which enters that opening on the outlet side, the opening consisting of a continuous circumferential groove. The block (10) in the figure holds the metering roller (18) which rotates (16) and is fed with the material at the top (20). This material is discharged from the bottom (24,26). Inlet (22) and outlet (24) are separated by the distances  (28) and (30). The roller (18) has sinusoidal groove round its circumference (32). This groove becomes filled with the material at the top (20) but is emptied again at the bottom by the scraper blade (34) mounted on a rod (38). The blade (34) is fixed so that it moves to and fro in the groove (32) to match its sinusoidal shape. ADVANTAGE - The design is suitable also for accurately metering out powders which do not pour well and which tend to cake.
Patent DE-4019155-A1 (DE)
Title: Removing oil from metal residue esp. from metal machining - by washing with detergent soln. and rinsing in mill contg. grinding elements
Inventor: KLINGER SIEGFRIED DR
IPC: C22B1/00
Filed: 1990-06-15
Abstract: Working up oily metal residues (I) esp. from metal machining, involves washing with an aq. detergent soln. (II), if necessary after preliminary removal of oil and pulverisation followed by sepn. and drying. At least one washing operation is carried out in a mill contg. grinding elements, esp. tower mill, ball, tower grinding, agitator ball or ball mill by operating the mill for up to 2 hr. After discharging (II) at least one, a rinsing soln. is added and the mill is operated for up to 0.5 hrs., then the mill is stopped and (I) is allowed to settle. The contaminated rinsing soln. is run off, then (I) is discharged. (II) pref. contains a combination of nonionic and anionic surfactants, pref. an alkylphenyl polyglycol ether and an alkyl benzenesulphonate. It may also contain Na polyphosphate Na2CO3, Na2SO4 and water glass. USE/ADVANTAGE - The technique is suitable for working up (I) including very finely-divided (I) with very high oil contents. Reduces oil content to under 0.5% and also removes abrasive particles. (3pp Dwg.No.0/0)
Patent DE-4019375-A1 (DE)
Title: Indirectly-heated vacuum dryer esp. for agricultural prods.
Inventor: BABOTH BELA
IPC: F26B17/12
Filed: 1990-06-18
Abstract: Indirectly-heated vacuum dryer esp. for agricultural prods. prod. flows under gravity through drying chamber having inlet and outlet lock hoppers and contg. system of flow distributing elements
Patent DE-4020520-A1 (DE)
Inventor: KEMMNER ULRICH DIPL ING
IPC: F04D5/00
Filed: 1990-06-28
Abstract: The proposal is for an assembly for feeding fuel from the fuel tank (10) to the internal combustion engine (18) of a motor vehicle. The feed assembly (12) comprises a feed pump arranged in the fuel tank and taking the form of a full-flow pump whose substantially cylindrical rotary impeller (34) is arranged in a correspondingly cylindrical pump chamber (36) and where at least one approximately annular feed channel (50) grooved in cross-section extends in at least one of the two chamber front walls from a suction aperture (58) opening into the pump chamber to a pressure aperture (68) leading therefrom and this chamber front wall is pierced in the region of the pressure aperture by a drilling (70) connecting the pump chamber with a region of the system in which underpressure prevails. Particularly reliable removal of gas bubbles from the pump and hence from the feed path is obtained in a simple manner in that this drilling is in a sealing surface (64) radially limiting the feed channel in relation to the axis of rotation of the impeller.
Patent DE-4021563-A1 (DE)
Title: Exhaust outlet for four cylinder IC engine - replaces Y-pipe with pipe having two parallel longitudinal chambers
Inventor: ROGGE WINFRIED
IPC: F16L9/18
Filed: 1990-07-06
Abstract: The exhaust gas outlets (2,3,4,5) from the cylinders lead into a common pipe (6). This is longitudinally split into two parallel chambers (8,9) by a central divider (7) and whichs leads to the exhaust pipe (10). A corrugated central divider (7) is pref. as it will improve heat absorption. The central divider extends some considerable way down the exhaust pipe toward the silencer. USE/ADVANTAGE - Improved performance of IC engine. Exhaust system uses economical method of reducing noise and exhaust pollutant levels.
Patent DE-4031710-A1 (DE)
Title: Corrosion protection medium for aluminium@ surfaces -  process for making corrosion protecting layers on aluminium
Inventor: MUELLER BURKHARD DR
IPC: C23C22/34
Filed: 1990-10-06
Abstract: An anti-corroson medium for protecting Al and its alloys contains (%wt.) a metal (esp. K) permeanganate 0.1-30; free or complexed fluoride ions (esp. NaF or NaBF4) 0.001-5; at leat one bath accelerator (esp. acids or salts such as ferricyanide, molybdate, or phosphate) 0.1-2; with the rest being water and the soln. having pH in the range 0-6.5. Treatment conditions are 5-100 deg.C, 10 sec. to 60 mins. and the soln. may be sprayed on, brushed on or the items merely dipped. USE/ADVANTAGE - Method does not suffer from the toxic and ecological problems associated with the use of Cr, nor is it multistage or laborious. In an example, sheet of Al (99.5, Pechiney) was pretreated by degreasing in mild alkali, pickling in 15% NaOH, then complex building in 0.5% Na gluconate at 50 deg.C, and finally deoxidised in 15% HNO3. Just before dipping in the soln. according to the invention the sheet was placed in 65% HNO3 for 2 mins., then immersed in a soln. contg. (%wt.) KMnO4 0.6; K2Fe (III) (CN)6 0.9, and NaBF4 1, the rest being water and the pH 2. After rinsing and drying the protected sheet was subjected to the salt mist spray test. No corrosion spots were discernible after 1008 hr.
Patent DE-4031728-A1 (DE)
Title: Looped matting material to retain earthworks etc. - is of natural biodegradable twisted fibres in wefts and warps with additional weft for the loops
Inventor: KIND KLAUS
IPC: D03D15/68
Filed: 1990-10-06
Abstract: To produce a three-dimensional looped matting material, twisted natural fibres are used for the warps (3') and wefts (3'') and, at the same time, a further natural fibre weft (3'') is laid as loops (5) projecting at different levels from the plane of the matting. The natural fibres are biodegradable, and are pref. of coconut or jute fibres. The loops (5) are woven in at different intervals, according to the application, in a firm woven bond with the twisted fibres of the matting (4), and project from the matting at different height levels. The complete matting structure (4) can rot away. The open spaces of the matting (4) can be filled with chippings of various granular sizes, to be bonded in place by a bitumen emulsion in various quantities. The matting (4) can also be filled with topsoil and humus materials or, according to application, with flooring concrete base on trass cement. The projecting loops (5) also give an additional bonding with any bulk filling. USE/ADVANTAGE - The matting material used is hydro construction, agriculture and cultivation, etc., to prevent soil erosion or to retain earthworks, etc. The matting is biodegradable and can be used in a variety of applications without damage to the environment.
Patent DE-4032341-A1 (DE)
Title: Pivot for secateurs or shears - has circular grooves or roller balls formed in contact surfaces of two legs
Inventor: MANGOLD GERHARD
IPC: B26B13/28
Filed: 1990-10-09
Abstract: The pivot for secateurs or shears provides a smooth surface for the two legs.  There is a bolt which enables the two legs to swing. The two opposite inner surfaces (1, 2) of the legs (3, 4) have circular grooves or roller balls (6) used as anti-friction devices, and all contact surfaces, including those (9, 10) and the bolt are tempered. USE/ADVANTAGE - Pivot for secateurs or shears has an easy action and is wear resistant.
Patent DE-4034894-A1 (DE)
Title: Wall plumbing connection - is trimmable to suit final wall finish and permits connection to varying pipe diameters
Inventor: SAUTER ERNST
IPC: E03C1/042
Filed: 1990-11-02
Abstract: Wall connection (10) for plumbing joints. Connects in-situ pipework to either the pipework of the final sanitary units or to interim sealing plugs used during construction. The connection piece (16) can be trimmed to suit the width of the final wall finishes. It has a smooth outer surface (16.1) for a sleeve coupling to pipework of varying diameters. ADVANTAGE - Wall plumbing joint to accommodate varying depth of wall finishes and varying connecting pipe diameters.
Patent DE-4035580-A1 (DE)
Title: Descaling compsns. - comprising mixt. of protonic and Lewis acids
Inventor: BUDICH MEINRAD
IPC: C11D7/08
Filed: 1990-11-08
Abstract: Compsns. for dissolving limescale comprise a weak to medium-strong acid (I) and a Lewis acid (II) in a (I):(II) molar ratio of 6-30:1. The (I):(II) molar ratio is 7-10:1. (II) is a combination of Fe2(SO4)3.9H2O (IIa) and Al2(SO4)3.18H2O (IIb). The (IIa):(IIb) molar ratio is 10:1 to 1:10, esp. 6:5 to 5:6. (I) is citric acid (Ia). USE/ADVANTAGE - The compsns. are useful for descaling washing machines, kettles, coffee machines, pressure cookers, etc. The compsns. are non-corrosive to stainless steel (cf. EP200776 and DE3538131).